1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Evgesh-ka [11]
2 years ago
10

How many kilograms of 30% salt solution by mass and 40% salt solution by mass

Mathematics
1 answer:
Zarrin [17]2 years ago
3 0

Answer:

60 kilograms of the 30% solution

140 kilograms of the 40% solution

Step-by-step explanation:

Let x = the no. of kilos containing 30% salt (solution 1)

and 200 - x = the no. of kilos containging 40% salt solution 2)

.30x = amount of salt in solution 1

.40(200 - x) = amount of salt in solution 2

.37(200) = amount of salt in the final mixture

salt in solution 1 + salt in solution 2 = salt in final mix.

.30x + .40(200 - x) = .37(200)  

Let's multiply thru the equation by 100 to remove the decimal fractions

30x + 40(200 - x) = 37(200)

30x + 8000 - 40x = 7400

-10x = -600

x = 60 kilograms of the 30% solution

200 - 60 = 140 kilograms of the 40% solution

You might be interested in
The graph shows the number of paintballs a machine launches, y, in x seconds:
Goryan [66]
Fraction 4 over eighty
4 0
3 years ago
Read 2 more answers
the owner of an aquatic store used 17 1/2 gallons of water to fill aquariums. he puts 5 5/6 gallons of water in each aquarium. h
BabaBlast [244]
I have absolutely no idea. sorry that i didn’t answer but thanks for the second answer that i needed to ask my question. i’m stupid do i have no idea what it’s asking. sorry
6 0
3 years ago
What is the solution to y = x + 2 and y = 3x – 2 and how do you know? PLEASE HELPPPPP! THANK U!
Nutka1998 [239]

Answer:

(2,4)

Step-by-step explanation:

We have the system:

y=x+2

y=3x-2.

This is already setup for substitution.

I'm going to replace my first y with what the second y equals.

That is, I'm going to write 3x-2=x+2.

Time to solve the following for x:

3x-2=x+2

Subtract x on both sides:

2x-2= 2

Add 2 on both sides:

2x. = 4

Divide both sides by 2:

x. = 2

Now that we know x=2 and we have an equation that relates x to y: either y=x+2 or y=3x-2, doesn't matter which we use, we can find y.

So we y=x+2 with x=2 which means y=2+2=4.

So the solution, the intersection, is (2,4).

5 0
3 years ago
Read 2 more answers
Find the sum of the first 47 terms of the following series, to the nearest integer.<br> 9,18,27,...
luda_lava [24]
18 is the answer hood this will help you
9 0
2 years ago
Read 2 more answers
Two less than the product of 9 and a number
Yanka [14]

Answer:

2-9=x

HOW

let the number be x

then 2 less than product 9

so

2-9

and a number

we don,t know number so take it x

so 2-9=x

6 0
2 years ago
Other questions:
  • To explore the bottom of a 25-m-deep lake, your friend tom proposes to get a long garden hose, put one end on land and the other
    9·1 answer
  • What percent of 98is14
    14·1 answer
  • In a group of 20 students 25% wear glasses how many do not wear glasses?
    6·2 answers
  • The area of a sq tile is 36 sq centimeters. What is the length of the tile?
    15·1 answer
  • Does someone know the answer ​
    6·1 answer
  • In a class of 30 high school
    6·2 answers
  • Another submarines dissent can be modeled as Y= -250 X, where why is the vertical position and access time in hours. How long wi
    9·1 answer
  • Hey please help me be geniune this is a timed test and I really need help will mark brianliest :( please no links I’m tired of s
    15·1 answer
  • In AIJK, the measure of K=90°, the measure of I=74°, and JK = 6 feet. Find the length of IJ to the nearest tenth of a foot.
    10·1 answer
  • Classify the triangle by its angles and sides.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!